 async function async1() {
        console.log( 'async1 start' )
        await async2()
        console.log( 'async1 end' )
    }
    
    async function async2() {
        console.log( 'async2' )
    }
    
    console.log( 'script start' )
    
    setTimeout( function () {
        console.log( 'setTimeout' )
    }, 0 )
    
    async1();
    
    new Promise( function ( resolve ) {
        console.log( 'promise1' )
        resolve();
    } ).then( function () {
        console.log( 'promise2' )
    } )
    
    console.log( 'script end' )

    // script start
    // promise1
    // script end
    // promise2
    // as1
    // as2
    // as1 end
